From 08fdffd4cf4ddd4eb4b32e78f93f4ff53ccec78f Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 8 May 2007 15:15:45 +0100 Subject: [PATCH] [ARM] Ensure head text is always placed at the start of kernel Commit 86c0baf123e474b6eb404798926ecf62b426bf3a highlighted that we may end up with the head text placed elsewhere in the kernel image. Introduce a new .text.head section to contain the initial kernel startup code, and always place this section at the beginning of the kernel image. Signed-off-by: Russell King --- arch/arm/kernel/head-nommu.S | 2 +- arch/arm/kernel/head.S | 2 +- arch/arm/kernel/vmlinux.lds.S | 10 +++++++--- 3 files changed, 9 insertions(+), 5 deletions(-) diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S index 0119c0d..5d78ffb 100644 --- a/arch/arm/kernel/head-nommu.S +++ b/arch/arm/kernel/head-nommu.S @@ -33,7 +33,7 @@ * numbers for r1. * */ - __INIT + .section ".text.head", "ax" .type stext, %function ENTRY(stext) msr cpsr_c, #PSR_F_BIT | PSR_I_BIT | SVC_MODE @ ensure svc mode diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 1d35eda..41f98b4 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -73,7 +73,7 @@ * crap here - that's what the boot loader (or in extreme, well justified * circumstances, zImage) is for. */ - __INIT + .section ".text.head", "ax" .type stext, %function ENTRY(stext) msr cpsr_c, #PSR_F_BIT | PSR_I_BIT | SVC_MODE @ ensure svc mode diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index faf32de..e4156e7 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -23,11 +23,15 @@ SECTIONS #else . = PAGE_OFFSET + TEXT_OFFSET; #endif - .init : { /* Init code and data */ + .text.head : { _stext = .; - _sinittext = .; + _sinittext = .; + *(.text.head) + } + + .init : { /* Init code and data */ *(.init.text) - _einittext = .; + _einittext = .; __proc_info_begin = .; *(.proc.info.init) __proc_info_end = .; -- 2.7.4